As a lens filter that reduces reflections and improves saturation, the B+W F-Pro S03 Circular Polarizing Filter 46 mm has a built-in delay foil and is made up of vacuum-coated glass surfaces. For protection, this product is fused with a single anti-reflection coating. It also comes with a thinner F-Pro Brass Filter Mount and a modified retaining ring. This item is assigned with product code BW-1065297.

Product Features in Detail

A filter that is a winner
This circular polarizing filter has beam splitters that crosses the light paths of their TTL exposure meter and with autofocus lenses. While circular filters have the same effect as their linear counterparts, they allow proper exposure metering and/or autofocus distance settings.

One coating to rule the light
The additional anti-reflection coating helps reduce reflections and improves light transmissions to up to 98 per cent.

This foil won't foil your photos
To correct inaccurate exposure and aperture values that linear polarizing filters often experience, this circular filter has a delay foil that changes the polarized light to an unpolarized rotation which results to correct readings for exposure and aperture.

New and improved filter mount
The thinner F-Pro Brass filter mount makes it possible to attach this with wide angle lenses and 24mm lenses without vignetting.

Modified retaining ring
Unlike before, the retaining ring now holds the filter glass from the back. Therefore, it will not get loose when the lens hood or the filter itself is removed.